In a First, an "Atomic Fountain" Has Measured the Curvature of Spacetime
The atom interferometry technique uses the effects of time dilation to reveal subtle changes in gravity’s strength -- Read more on ScientificAmerican.com.....»»
Researchers call for a new measurement of time for tunneling particles
In an amazing phenomenon of quantum physics known as tunneling, particles appear to move faster than the speed of light. However, physicists from Darmstadt believe that the time it takes for particles to tunnel has been measured incorrectly. They pro.....»»
Probing neptunium"s atomic structure with laser spectroscopy
A new technique developed by researchers in Germany can measure ionization states of this element more precisely than before, with implications for its detection and remediation in radioactive waste......»»
Dell’s 40-inch curved WUHD monitor is $300 off
The 40-inch Dell UltraSharp U4021QW curved WUHD monitor with a 5120 x 2160 resolution and a 2500R curvature is down to $1,500 after a $300 discount from Dell......»»
Physicists reach atomic-scale telegraphy with light
In the 1880s Heinrich Hertz discovered that a spark jumping between two pieces of metal emits a flash of light—rapidly oscillating electromagnetic waves—which can be picked up by an antenna. To honor his groundbreaking work, the unit of frequency.....»»
Geologists, biologists unearth the atomic fingerprints of cancer
Scientists at the University of Colorado Boulder and Princeton University have, for the first time, employed a tool often used in geology to detect the atomic fingerprints of cancer......»»
The universe could be filled with ultralight black holes that can"t die
Primordial black holes are hypothetical objects formed during the earliest moments of the universe. According to the models, they formed from micro-fluctuations in matter density and spacetime to become sand grain-sized mountain-massed black holes......»»
Fusion record set for tungsten tokamak WEST
Researchers at the U.S. Department of Energy's (DOE) Princeton Plasma Physics Laboratory (PPPL) measured a new record for a fusion device internally clad in tungsten, the element that could be the best fit for the commercial-scale machines required t.....»»
New mirror that can be flexibly shaped improves X-ray microscopes
A team of researchers in Japan has engineered a mirror for X-rays that can be flexibly shaped, resulting in remarkable precision at the atomic level and increased stability......»»
Good vibrations: Low-energy lasers induce atomic excitation in semiconductor materials
Semiconductors are a cornerstone of next-generation technology, so a new method to excite atoms in semiconductor materials is likely to excite a broad range of researchers and industries as well......»»
Twisting and binding matter waves with photons in a cavity
Precisely measuring the energy states of individual atoms has been a historical challenge for physicists due to atomic recoil. When an atom interacts with a photon, the atom "recoils" in the opposite direction, making it difficult to measure the posi.....»»
Generating graph states of atomic ensembles via photon-mediated entanglement
Graph states, a class of entangled quantum states that can be represented by graphs, have been the topic of numerous recent physics studies, due to their intriguing properties. These unique properties could make them particularly promising for quantu.....»»
Scientists tune the entanglement structure in an array of qubits
Entanglement is a form of correlation between quantum objects, such as particles at the atomic scale. The laws of classical physics cannot explain this uniquely quantum phenomenon, yet it is one of the properties that explain the macroscopic behavior.....»»
Manipulating the geometry of the "electron universe" in magnets
Researchers at Tohoku University and the Japan Atomic Energy Agency have developed fundamental experiments and theories to manipulate the geometry of the "electron universe," which describes the structure of electronic quantum states in a manner math.....»»
Magnetic with a pinch of hydrogen: Research team develops new idea to improve the properties of ultra-thin materials
Magnetic two-dimensional materials consisting of one or a few atomic layers have only recently become known and promise interesting applications, for example for the electronics of the future. So far, however, it has not been possible to control the.....»»
Estimating uncertainty in atomic spectroscopy
If you repeat a measurement with the same or different instruments, you'll get slightly different numbers each time. Estimating the uncertainties associated with these numbers turns them into an informative result......»»
Thermal properties of new 2D materials for microchips can now be measured well
Making ever smaller and more powerful chips requires new ultrathin materials: 2D materials that are only 1 atom thick, or even just a couple of atoms. Think about graphene or ultra-thin silicon membrane for instance......»»
Vibrations of granular materials: Theoretical physicists shed light on an everyday scientific mystery
Coffee beans in a jar and piles of rice or sand are examples of granular matter: materials composed of large numbers of macroscopic—rather than atomic scale—particles. Although granular matter is extremely familiar in everyday life, it represents.....»»
Study finds iron-rich enamel protects, but doesn"t color, rodents" orange-brown incisors
Chattering squirrels, charming coypus, and tail-slapping beavers—along with some other rodents—have orange-brown front teeth. Researchers have published high-resolution images of rodent incisors in ACS Nano, providing an atomic-level view of the.....»»
Victorian London was a city in flux: Architectural models helped the public visualize the changes
In 1848, the British government decided to draw up a precisely measured map of London. Imperial expansion had seen the city develop quickly, particularly around the docks and the City of London......»»
New technique lets scientists create resistance-free electron channels
An international research team led by Lawrence Berkeley National Laboratory (Berkeley Lab) has taken the first atomic-resolution images and demonstrated electrical control of a chiral interface state—an exotic quantum phenomenon that could help res.....»»